Appeal 3314942
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Official decision document
The decision, section by section
7 sections
Read the development description and the Inspector’s text from the official decision PDF in source order. Source headings are retained where available. Personal and contact details are removed by an automated privacy filter; this is source material, not Rules for You analysis.
Section 01
Development description
a single storey rear extension Single storey rear extension measuring a depth of 8 metres, maximum height of 3.84 metres and an eaves height of 3 metres.
Section 02
Decision
The appeal is dismissed.
Section 03
Preliminary Matters
Under Article 3(1) and Schedule 2, Part 1, Class A of the Town and Country Planning (General Permitted Development) (England) Order 2015 as amended (the Order), planning permission is granted for the enlargement of a dwellinghouse subject to limitations and conditions.
Where an application is made for a determination as to whether prior approval is required for development which exceeds the limits in paragraph A.1(f) but is allowed by paragraph A.1(g) to Part 1, paragraph A.4(3) provides that the local planning authority may refuse the application where it considers that the proposed development does not comply – or that the developer has provided insufficient information to enable the authority to establish whether the proposed development complies with the conditions, limitations or restrictions that are applicable to such permitted development.
Section 04
[name]
The main issues in the appeal are: • Whether the proposed development satisfies the requirements of the Town & Country (General Permitted Development) (England) Order 2015 with regard to being permitted development under the above Order. • And if so, whether planning permission is deemed to have been granted.
Section 05
Permitted development
The appeal property is a two-storey detached dwellinghouse. The original rear wall of the property has a projecting bay window that extends from the ground level up to an including the first-floor level. Although it has been surrounded by an existing single storey rear extension, as I observed on my site visit, it remains in situ internally. There are similar features to surrounding properties and it is not in dispute that it is an original feature of the property.
[name].1(j) of Class A of the Order outlines that development is not permitted by Class A if, amongst other things, the enlarged part of the dwellinghouse would extend beyond a wall forming a side elevation of the original dwellinghouse and would have a width greater than half the width of the original dwellinghouse.
The Council considered in their assessment of the application that the projecting bay window forms part of a side elevation of the original dwellinghouse, and that the extension would have a width greater than half the width of the original dwellinghouse and thus would not constitute permitted development.
The Permitted development rights for householders - Technical Guidance (MHCLG 2019) identifies a side elevation will be any wall that cannot be identified as being a front wall or a rear wall. It also states that that houses will often have more than two side elevation walls. The diagrams that follow within the Technical Guidance do not show the same circumstances as the current case. I therefore consider that it is a matter of planning judgement, on the facts of a particular case, what constitutes a side elevation on any dwellinghouse taking into account the guidance in the Technical Guidance.
It is the case that a very short and/or shallow wall could constitute a ‘side wall’ for the purposes of the Order. The only possible exception would be if it was found, as a matter of fact and degree, that the protrusion was too shallow to constitute a wall. A window sill, for example, would not normally constitute a side wall, but a projection in the brickwork might be identifiable as such.
The bay at the appeal property is three sided and is of a solid construction with glazing above. The submitted plans show that it projects around 1.1 metres from the flat section of the rear elevation. The submitted plans also show that this projection contributes, not insignificantly, to the floor area of the rooms where it is located. Although its projection is less than 90 degrees to the flat section of the rear elevation, it is greater than 45 degrees. Therefore, the side elevations of the bay are angled more towards the sides of the property than the rear. The submitted ‘side elevation’ plan also clearly shows the first-floor element of the bay window at the rear. Taking these factors into account, this projection, as a matter of fact and degree, forms part of the side elevation of the property and would not be a rear wall.
The appellant has referred to part of the Technical Guidance which outlines that the principal elevation of a property could include more than one wall facing in the same direction - for example, where there are large bay windows on the front elevation. The guidance outlines that in such cases, all such walls will form the principal elevation. This does not however appear to also include the sides of any such projection as shown in the relevant diagram. Even if this were to be the case, it is applicable only to the principal elevation and does not relate to the rear elevation or the part of the Order which is relevant to this appeal. This part of the Guidance is not, therefore, directly relevant to the appeal proposal and I give it limited weight.
In the proposed development, it would extend beyond the projecting bay window, part of which forms a side elevation of the original dwellinghouse. The extension would have a width greater than half the width of the original dwellinghouse. The proposed development is therefore not permitted under Schedule 2, Part 1, Class A of the Order.
Section 06
Other Matters
The appellant has referred to previous appeal decisions1 whereby Inspectors have considered that the projection of a bay window would not constitute forming part of a side elevation. One of these decisions refers to a previous appeal2 decision whereby an Inspector considered that the projection of a bay window did constitute forming part of a side elevation.
In the [address] appeal, the Inspector describes the bay window as being glazed to ground level which is different to the solid construction at the lower portion of the bay window at the appeal property. The evidence also does not outline the angle of projection. In the [name] appeal the Inspector outlines how the bay projects at approximately 45 degrees and extends about 0.8 metres. This is different to the bay window at the appeal property on both counts as outlined above.
Therefore, although the above appeals are similar insofar as they concern bay windows, they are however different to the bay window at the appeal property in terms of design and construction. I have had regard to these decisions; however, I have come to my own conclusion on the issue based on the individual merits of the case.
The appellant has also referred to a certificate of lawfulness granted at the neighbouring property. [name] do not have full details of the case, it relates to an application submitted under a separate procedure. When taken against the application subject to the appeal, an element of inconsistency may exist, however the timescales, over 7 years apart, would be reasonable to reflect a revision to decision making on such matters. It does not alter my assessment given above, and I therefore give it limited weight in the appeal.
The appellant outlines how they have had dialogue with various individuals on the matter who share their view that the bay window does not form a side elevation. Such anecdotal evidence is however of limited weight.
The appellant considers that the Council’s approach in refusing consent hinders the permitted development rights of households and flies in the face of the spirit of the Order by unreasonably restricting valid permitted development rights. [name] have found that the proposed development would not accord with the limitations of the Order, these matters would not be a reason to allow the appeal.
The fact that the Council has not legally challenged any previous appeal decisions also does not provide a reason to allow the appeal. 1 APP/N5090/D/17/3170532 and APP/N5090/D/21/3284504 2 APP/N5090/D/18/3208435
Section 07
Conclusion
The proposed development is therefore not permitted under Schedule 2, Part 1, Class A of the Order. For the reasons given above, and having had regard to all other matters raised, it is concluded that the appeal should be dismissed.
Planning inspector and document dates
The official casework attribution is grouped under a one-way keyed hash and shown only by its local identifier. Decision-letter dates and page references are extracted by fixed first-page rules and checked against that authoritative record.
Appeal Decision
- Extracted inspector · page 1
- Inspector attribution ID 145No official casework-database value to compare
- Extracted decision date · page 1
- 26 April 2023Matches the official casework database
- Extracted site visit dates
- 24 March 2023 (page 1)
Reference and authority
Official identifiers and the planning authority recorded against this case.
- Case reference
- 3314942
- Application reference
- 22/5497/PNH
- Lead case reference
- Not recorded
- Planning authority
- London Borough of Barnet
- Planning authority code
- E09000003
Casework details
The casework, procedure, development and linking details supplied by the official record.
- Casework type
- Householder (HAS)
- Procedure
- Written Representations
- Development type
- Householder developments
- Appeal type reason
- 3. Refused prior approval of permitted development rights
- Appeal reason
- Refusal
- Type detail
- Planning Appeals - Full
- Jurisdiction
- Transferred
- Link status
- Not Linked
Site and development
Published appeal-site measurements and planning designations, without the withheld precise location fields.
- Site area
- Not recorded
- Floor space
- 40 m²
- Number of residences
- 0
- Site in Green Belt
- No
- Agricultural holding
- No
- Affects setting of a listed building
- Not recorded
- Historic building grant made
- Not recorded
- Relates to a conservation area
- Not recorded
- Flooding is an issue
- Not recorded
- Site within an AONB
- Not recorded
- Site within an SSSI
- Not recorded
Decision and dates
The published outcome and every imported case date.
- Official decision
- Dismissed
- Decision category
- Dismissed
- Received date
- 18 January 2023
- Valid date
- 22 January 2023
- Start date
- 14 February 2023
- Planning authority decision date
- 14 December 2022
- Appeal decision date
- 26 April 2023
Case administration
Published recovery, call-in, costs and enforcement information for this case.
- Redetermined
- No
- Bespoke
- No
- Date recovered
- Not recorded
- Date not recovered or derecovered
- Not recorded
- Call-in date
- Not recorded
- Costs applied for
- Not recorded
- Enforcement grounds count
- Not recorded
- Enforcement grounds
- Not recorded
Source and catalogue history
When this record appeared in the rolling official release and when the catalogue stored it.
- Source
- Planning Inspectorate casework database
- Source data system
- Horizon
- Dataset status
- Current release
- Catalogue record ID
- 31826
- First seen
- 20 August 2026 at 14:24
- Last seen
- 20 August 2026 at 16:26
- Removed from release
- Not recorded
- Record created
- 20 August 2026 at 14:24
- Record updated
- 24 August 2026 at 16:21